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I have a BenQ PB6100 that has served me well for a few years. I was on my third lamp when the projector suddenly stopped working after only a few hundred hours. Thinking that I had a dud lamp, I bought and installed a new lamp, but that didn't work. When I plug in the projector the power button and the menu/left/right/exit button lights up, but the LED indicators (power, temp, and lamp) don't light up. There is also a hum but it doesn't seem that the cooling fan is running. It doesn't seem that the lamp is getting power. Any ideas?

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  • richardba872 Jan 11, 2011

    Thanks. Is there any other cause I should consider other than inverter failure?

  • richardba872 Jan 11, 2011

    Thanks very much. Tough news to swallow but probably better than spinning my wheels trying to fix this thing.



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The inverter - the system that generates the high voltage needed by the bulb - has failed due to normal wear. When that happened it has surely done some damage in the power source also.
The projector is fixable, the inverter/ballast board will have to be replaced and the power source tested and repaired if necessary. But on an such old device, age related failures will be common from now on and in the end fixing them will cost you more than a new one - it's time to accept that this one has done its duty and it's time to retire.
Just cut your losses and buy a new one.

Posted on Jan 07, 2011

  • Azrael SRL Jan 11, 2011

    The power source, but the damage would have to be very extensive for it to fail without a warning from the status light. And in that case the entire projector would be clearly and definitely dead, no way of fixing it.

  • Jose Rommel Racimo
    Jose Rommel Racimo Jul 02, 2013

    regulator ic on the power source maybe



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